Doweling machine



May 8, 1923.

J. LlTTl- EFIELD DOWELING MACHINE Filed Dec. 5, 1921 2 Sheets-Sheet l INVENTOR e, @mgm wmssfmfm l May s, 1923.

1,454,751 J. LITTLEFIELD DOWELING MACHINE Filed Deo. 5, 1921 v' 2 sheets-sheet 2 Wp/f7.4.

INVENTOR ATTORNEY Patented ay 8, 1923.

DownLIne MACHINE.

pplicatcm` filed December 5, 1921. Y Serial No. 520,138.

To all w 7mm it may concern Be it known that l, JOHN LITTLEFIELD, av citizen of the United States, residing at Ba onne` in the county of Hudson and State of i ew Jersey7 have invented new and useful improvements in Doweling Machines, of which the following is a specification.

This invention relates to doweling machines.

Some of the objects of the present invention are: to produce a comparatively thoroughly efficient and effectual machine of the character mentioned; to combine in a machine of the character mentioned, clamping means, hole boring means, dowel inserting means, and dowel sharpening or pointing means. lW ith these and other objects in view the invention resides in the particular provision and operation of parts hereinafter fully described and illustrated in the accompanying drawings, in which:

Figure 1 is a plan view. v

Figure 2 is a longitudinal sectional view taken on the line 2-2, Figure 1.

Figure 3 is a transverse sectional view taken on the line 3-3, Figure 1.

Figure 4 is an end elevation.

Figure 5 is a horizontal longitudinal sectional view taken on the line 5 5, Fig-` ure 2.

Referring now more particularly to thel several views of the drawings for all of the details, it will be apparent that, the machine of the present invention will include afsupport or table 10 upon which the work is clamped in place for the doweling operations. The work operated upon may be any kind in which holes are bored, and -in which holes, dowels are to be inserted, such as in the making of barrel heads. The ma terial for making barrel heads is known as Cheading and the heading is clamped in place on the table for the boring and dowel inserting operations. The table l() has au abutment 11 having a plurality ofI holes 12 therein for a purpose to appear.

In order to effect the clamping of the heading, there is provided a movable bar 13 having holes 14 therein. The bar 13 is car- D0 ried by arms 15 which are movable in guides 16 on the frame of the machine. The barE 13- is movable over the top of the table 10.

Movement of the bar 13in one direction over the table 10 is effected by the employment of a hand lever 17 connected to a crankv lever 13 having pinI and slot connection with one of the arms 15. Return movement of the bar 13 to a normal position is effected bysprings 19. bar 13 over the table 10 against thel side edge of heading on the table causes the heading to be clamped between the abutmentl 11 and the said bar. employed for preventing lateral movement of the heading. rlhe arms 20fare pivotally mounted as at 21 to parts of' the machine frame. Movements of the arms l20 is effected by the employment of 'a'shaft 22 Clamping arms 2O vaflreV The movement ofthe .i

mounted for longitudinal movement in bearings A23 on the machine frame. The shaft 22 has attached thereto a` member 24 to which are connected links 25, as at'26. The

links 25 are connected respectively lto the arms 20,4 and by :virtue of springs 27 the links A are yieldingly connected to the saidV arms 20. A collar 28 is adjustable on the'shaft and a spring 29 is arranged between the collar 28 and one of the bearings 23. The

member 24 is connected to the bar 13 sothat i the member 24 and the bar 13l move together. The springs 19 and the spring 29 allow eXtra movement of the shaft 22 after the arms 2O and the bar 13 are in` clamping engagement with the heading, 'for a Ipurpose to appear. i c v -The `boring or drilling of `holesin the heading is accomplished by the useof drills 30 which put holes in one side edgeof the heading; and drills 31 which putholes in` the opposite side edge of the heading.` Thedrills 30 arelmounted for rotation in bearings 32 carried by a vcarriage 33 arranged for reciprocatory movement inguides 34 on the machine frame. Thefdrills 30 may be rotated in any suitable manner. The carriage 33 has a lug 35 which is engaged at times by a lug 36 on the shaft 22sothat movement of the` carriage 33v may be .ef-

fected in the use of the same operating means which is used for effecting the move-A ment of the bar 13. After the bar 13 and the arms 20 arek in clamping engagement with the heading, the shaft 22, ashereinbefore stated, may have'extra. or additional movement, and as a consequence, the engagement of the lug 36 with the lug 35 may be brought about, with the result that the carriage 33 will be moved. This movement of the carriage Will cause the extension of the drillbits through the holes 14 in the bar 13 for the drilling of holes in the heading one and one-halfinches long in spaced relation. Springs 37 connected to the carriage 33 and connected to the machine frame serve to return the carriage to a normal position. rlhe drills 31 are mounted for rotation in bearings 38 on a carriage 39 arrangedl for reciprocation in guides 40 on the machine frame. Movement of the carriage 39 is effected by the use of any suitable means, and inthe present instance use is made of a hand lever 41 pivotally mounted, and acrank lever 42 which has pin and slot connection With the said carriage. The drills 31 have'sliding movement in the bearings 38. Each of the drills 31 embodies a shaft 43 by virtue of Which they are slid and rotated. Stops 44 on each of the shafts 43 limit the movements thereof in opposite directions. Pulleys 45 are employed for the rotation of the drills 31, and each pulley is loosely keyed to its shaft so that the drills may be slid even though they are beine,r rotated. Each of the shafts 43 has a reduced part 46 which provides a shoulder 47 on each shaft.v The parts 46 of the shafts 43 extend through key-hole slots 48 in a bar 49 so that in certain positions of the shafts 43, portions of the bar 49 Will Work against the shoulders 47, Whereas in certain other positions of the shafts 43 the bar 49 may move along the said shafts for a reason to appear. Movement of the bar 49 is effected by the use of a crank lever 50, pivotally mounted as at 51; a link 52; and a foot treadle 53 Which is spring actuated. Springs 54 encircle the shafts 43 and effect the return movementthereof to normal positions with respect to the bearings 33.

It will now be manifest that, means is provided for boring holes in the opposite side edges ot the ivork after it has been clamped in place. or holes may be bored in but. one side edge of the Work at the Will of the operator.

In order that the pieces which constitute a, barrel head may be brought securely in head forming relation, doyvels are inserted inthe holes in the intermediate pieces of heading for the attachment of the centscant being a term applied to the end pieces of a barrel head. The insertion of dovvels is carried out by the'employment of magazines 55 which are carried by the carriage 39 which hold supplies of dovvels. Plungers 56 operate in conjunction with the n'iagazines to eject the doivels singly from the magazines through the holes 12 in the abutment 11 after the carriage 39 has been moved to permit that. The plungers 56 are mounted for sliding movement in bearings 53 on the carriage 39. Each of the plungers 56 embodies a stop 59 which limits the longitudinal movement of each plunger in one direction. Eachof the plungers has a reduced part 60 to provide a shoulder 61 Which limits its longitudinal movement in one direction by the vengagement of the ;--;houlder with the bar 49. Certain of the keyhole slots 43 in the bar 49 receive the parts 60. In certain positions ot' the plungers 56 With respect to the bar 49, portions of the bar Work against the shoulders 61, Whereas in certain other positions of the, plungers 56 with respect to the bar 49. the bar may move along the plungers. Springs 62 encircle the plungers 56, and they are employed to return the plungers to normal positions. i f

It Will now be manifest that, by movingthe carriage 39 to one position, the drills 31 maybe made to drillholes and in the other l position to which the carriage 39 may be moved, the plunger-s may be kmade to 'project donf-'cls from the magazines, through the holes 12 into the holes made by the drills 31.

lin order to facilitate the assembling of the pieces of heading into barrel head forming relation. the doivels are provided with points. ln other Words, the Clo-Wels are sharpened so that thinning which is put between joints can be `put over the dowels Without breaking theY flagging. To this end yknives 63 having reciprocatory movement are employed. The knives 63 move up and dovvn in guide menilxers 64. rlhe said knives traverse the rholes 12. and the cutting' edges thereof are disposed normally above the said holes '12. A rock shaft 65 is mounted on the machine frame, and the said shaft has arms 66. Each 'of the arms 66 is connected to one of the knives 63 by a link 67. The shaft 65 has an arm 68 to Which is connected a link orrod which is connected to a spring` actuated Yfoot treadle 7 (l. By Working the foot tre-edle 76 the knives may be reciprocated for the cutting` or sharpening' operation.

To form a. barrel head a pieceof heading is placed on the table 10. The hand lever 17 is pulled With the result that the headingr '-.vill be clamped between the abutment li, har 13 and the ends or" clamping arms 20.

.idditional pull on the lever 17 causes the i heading. The hand lever 41 is then manipulated to shift the carriage 39`to bring the plungers 56 in alinement With the holes l2. By pressing down on the foot treadle 53 the plungers 56 will be moved longitudinally With the result that a pair of doWels Will be thrusted` from the magazines into the holes drilled by the drills 3i. Now, by pressing doWn on the foot treadle the knives 63 will be moved downwardly-in their guides 64:, and will cut ofi' portionsof the dowels inserted in the last preceding operation, to point the dowels. The cants herein referred to have only a pair of holes drilled in them in the straight edges thereof, and the dowels are inserted in the manner eX- plained in the pair of holes so drilled. These dowels are also pointed with the knives 63. The pointed dowels facilitate the assembling of the barrel head parts,` and in cases Where flagging orthin apertured stripsare used in effecting the proper formation of the barrel head, the pointed ends of the dowels may be readily pushed through the apertures in the flagging.

What is claimed is:

l. In a machine for inserting dovvels in the doWel holes in barrel heading and for cutting and pointing the dowels after insertion thereof in said doivel holes, means for clamping the barrel heading in liXed position, means co-related to the clamping means for inserting dewels in said doivel holes of the barrel heading, and meansalso in corelation to the clamping means for cutting and pointing the doive-ls after the insertion thereof in said dowel holes.

2. A doWeling machine comprising mechanismfor ixedly supporting a piece of material having doivel holes therein, mechanism for partly inserting doivels in the holes in said piece ofmaterial, and mechanism` for cutting and pointing the inserted dowels at points `at one side of said piece of material While the latter is supported.

A'doweling machine comprising mechanism for fiXedly supporting a piece of material, holing mechanism for drilling` holes in said piece of material While it is fixedly supported, said holing mechanism including a plurality7 of shiftable drills, mechanism for partlyT inserting dovvels in the holes in said piece of material While itis I'ixedly supported, and mechanism for cutting Vand pointing the inserted. doivels at points at one side of said piece of material While the latter is supported.

4. A doweling machine comprising mechanisms fory iXedly` supporting` barrel heading, heling mechanism for drilling holes in said barrel heading While the latter is fiXedly supported, lsaid holing mechanism including sets 0f `shiftable drills disposed to drill holes in the opposite sides of said barrel heading; mechanism for partly inyedly supportedsaid heling mechanism including independently shiftable sets ofl drills disposed respectively to .said vbarrel heading tof drill holes in the opposite sides thereof; mechanism for ypartly inserting dcwels in certain of said holes in said barrel heading While the latter is iixedly supported, and mechanism for pointing the protruding parts of the inserted dcivels. j 6. A doweling machine comprising supporting and clamping mechanism for fixeuly supporting barrel heading, said suppivotally mounted spring actuated gripping means",a yieldingly mounted bar and means for eectingthe movements of said gripping means andA said bar; holin'g mechanism` for drilling holes in said lbarrel heading While the latter is fixedly supported, mechanism for .partly inserting fdovvels in the holes drilled insaid barrel heading While the latter is fixedly supported, and cutting mecha-n nism for ypointing the protruding parts of the inserted dovvels. l V

7. A dovveling machine comprising mechanism for fixedly` supporting barrel heading, holing mechanism for drilling hcles in said barrel heading While the latter is y iiXedly supported, mechanismffor inserting. dowels in the holes drilled in said barrel heading With parts of the dowels protruding from the holes, and cutting mechanism for pointing the lprotruding parts of said dowels inserted inthe holes in said barrel heading While the latter is fixedly supported, thev said vcutting mechanism including knives of which each one moves to point one" of said protuding parts, and means for effecting vthe `movement, of said knives.

8. A doweling machine, comprising'mechanism for iixedly supporting barrel heading, holing mechanisnifor drilling holes in said barrel heading While the-latter is {iX- edly supported, mechanism for inserting dowels in the holes drilled in said rbarrel heading withy parts of the dovvels protruding from the holes, and' cutting lmechanism for pointing the protruding parts of saidA doivels inserted in the holes in.. said barrel heading` While the latter is iiXedly supported, thesaid cutting mechanism including knives each having reciprocatory movement, guides in which eachvk knife moves,` and means for effecting the reciprocation of said knives. l a. f

porting and clamping mechanism including 9. il doiveling machine comprising mechanism iior iixedly supporting barrel heading, holing mechanism for drilling holes in 'aid barrel heading vWhile the latter is iii;- edly supported, donfel inserting mechanism for inserting` a doivel in each hole in said barrel heading` With a part of the doivel protruding yWhile the barrel heading is fiXedly supported, said doivel inserting mechanism comprising doivel magazines, plungers operable in conjunction with said magazines respectively -to project ldoivelsy from the magazines, and means for effecting the reciprocation of said plungers; and cutting mechanism positioned with respect to the position of the .Darrel heading for point-ing said protruding parts.

l0. A doiveling machine comprising mechanism for iXedly supporting barrel heading, heling mechanism forV drilling holes in said barrel heading While the latter is tixedly supported, doivel inserting mechanism for inserting a doivel in each hole drilled in said barrel heading with a part protruding While the barrel heading is ixedly supported, said dowel inserting mechanism comprising shittabler doivel magazines, plungers operable in conjunction with said magazines respectively to project dovvels t'rom the magazines singly; and cutting mechanism positioned with respect to .the position of the iXedly supported barrel heading for pointing said protruding parts or the inserted dovvels.

ll. A doweling machine comprising mechanism Yfor ifizedly supporting-` barrel heading, holing mechanism for drilling holes in said barrel heading While the latter is ii-Xedly supported, said heling mechanism including a plurality of drills; doivel inserting mechanism for inserting a doWel in each hole drilled in said barrel heading with a part ot' each dowel protruding from its hole, said doWel inserting mechanism including doivel n.ojecting plungers; means for effecting the reciprocation of said drills, the said means serving to effect the reciprocation of said plungers, and cutting mechanism positioned with respect to the position of said barrel heading for pointing the protruding parts of the inserted doWels.

,fr dniveling machine comprioi ng clam ping and supporting mechanism for lixedly supporting barrel heading, said clamping and supporting mechanismincludinlr clamping members; heling mechanism. tor drilling holes'in said barrel heading While the latter is tixedly supported, said heling mechanism including` drillsjineans for actuating said clamping members and ttor ettecting the reciprocation ot said drills, dovvel inserting` mechanism for partly inserting a doivel in each of the. holes drilled in said barrel heading While the latter is lixedlyl supported in its original position, and cutting mechanism for pointing the protruding part ot each or' the inserted dovvels, said cutting mechanism including knives each or' which is operable to cut diagonally across the pro'- ruding part of one of said inserted dowels in the pointing operation.V

13. A doiveling machine comprising hole making mechanism, supporting and clamping mechanism, doivel positioning and vinserting mechanism, knives having reciprocatory movement, `guides in which the knives move at an angle with respect to the inserted positions of the dowels and means for eecting the reciprocation of said knives.

let. ln a machine, a ivork supporting table, means for clamping the Work in plac on said table, a carriage mounted for reciprocatory movement, a drill carried by said car- 'i a magazine carried by said, carriage,a

ger carried by said carriage and operable in conjunction with said magazine to eject doWels therefrom, means for effecting the recipi'ocation 'ot said carriage, and means tor effecting the rotation et' saidV drill, and, means for effecting the reciprocation of said drill and the reciprocation of said plunger selectively. y

l5. ln a machine,-a Work supporting table, means 'for clamping the Work in place on said table, a carriage mounted for reciprocatory movement, drills carried by said carriage, magazines carried by said carriage, plungers carried by said carriage and operable in conjunction With said magazines to eject doivels therefrom, means for effecting the reciprocation of said carriage, means for mi i effecting the rotation of said drills, means for effecting the reciprocation of said drills and the reciprocation of said plungers selectively.

16. In a machine, a'ivork supporting table, an abutment on said table, the said abutment having apertures therein, means for clamping Work in place on said table against said abutment, a carriage mounted for reciprocatory movement, drills carried by said carriage, the said drills being operable through said abutment by virtue of said apertures, magazines carried by said carriage, plungers carried by said carriage and operable in conjunction ivith said magazine to eject doivels therefrom, means for effecting the reciprocation of said carriage, means for effecting the rotation of said drills, and means for effecting the reciprocation of said drills andthe reciprocation ot Said plungers selectively.

17'. A machine having a Work supporting table, an apertured yabutment on said table, means for clamping Work in place on said table against said abutment, a carriage mounted tor reciprocatory movement, means for limiting the movement of the ca-rriagein opposite directions, drills carried by said carriage, the said drills being operable through said abutment by virtue of the apertures in the abutment, magazines carredby said carriages, plungers carried by said carriage operable in conjunction with said magazines to eject dowels therefrom through the apertures in the abutment a predetermined distance, means for effecting the reciproca-V tion of said carriage, means for effecting the rotation of saiddrllls, means for eecting the reciprocation of said drills and the reciprocation of said plungers selectively, l0A

and means allowing the drills to be recipro cated While they are being rotated.

In testimony whereof I hereby alflx my signature.

JOHN LITTLEFIELD; 

